ASoC: dt-bindings: qcom,wcd938x: move out common properties

Move out common properties from qcom,wcd938x bindings in preparation
of adding Qualcomm WCD939x bindings sharing most of the properties.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://msgid.link/r/20231219-topic-sm8650-upstream-wcd939x-codec-v4-1-1c3bbff2d7ab@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>